Process for making belting



o. CZARAN.4 PROCESS FOR MAKING BELTING. u

APPLICATION FILED IAN28. |919. 1,391,302.

Pamedsept. 20,1921.

2 SHEElS-SHLE l.

0. CZARAN.

PROCESS FOR MAKING BELTING.

APPLICATION FILED IAN.2B, 1919.

"Patented Sept. 20, 1921.

2 SHEETS-SHEET Z.

Orr @24x44 INVENTOB III/777 m l l BY ATTORNEY I y UNITED PATENT OFFICE.

oTTo GZANAN, or LONG ISLAND CITY, NEW YORK.

PROCESS FOR MAKING BELTING.

To all whom t 'may concern.'

Be it known that OTTO CZARAN, subject of Austria-Hungary, and resident of Lon Isf land City, in the county of Queens vand tate of New York, has inventedl certain new and useful Improvements in Processes for lMaking Belting, of which the following isa specification. 'n l This invention relates to beltingand is directed to a process for making belting for light machinery such as sewing machines and the like. Thesmain object of my invention is to provide a process wherebyk belting of the character described may be made of any desired cross-section in a continuous operation from a side of raw material'such'as leather, which results in a finished spliced belt of desired length. i

A further object of this inventionis to provide a process for `making belting of the character described which shall result in a belting that is completely finished, its surface being hardened, smoothened, and polished and the fibers thereof having been lengthened by tension to prevent the finished belt from vstretching unduly under strain and to overcome its elasticity whereby it tends to assume its original circular shape when fed from aV disk of raw material. Y i

Y Other objects and advantages willappear from the detailed description and the features of novelty will be particularly pointed out in the claims. l I In `the drawings accompanying thisspecification, I have shown a'perfect form of apparatus for carrying out my newlyrimf proved process, and the processy willbe understood -n connection .witlrthe apparatus showny in these drawings in which, y

Figure 1 is a plan view of a'machine em-v bodying my invention and showing atable upon Vwhich are mounted the specified@ vices for performing the several operations required in making. the` roundfbeltand pre-Y ferred vmeans from ldriving said mechanism.

Fig. 2 is a sideelevation Vof the structure illustrated in Fig. 1 and partly-*in longitudinal section.

Fig. 3 is a longitudinal kview ypartly in section illustratingga construction for holding the disk of leather.V It is. rotated between a pair of rollers prior tov beingY cut bythe dividing knife and referred to; in Fig. l .by line Ji-3.` Y l l Specification of Letters Patent. Patented Sept. 20, 1921. Appiicationhmea January 28,'1919." seriai No. 273,649.

Fig. 4 is a cross-sectional view of the offset line 4 4 of Fig. 2.

Fig. 5 is a cross-sectional view on line 5-5 of Fig. Y 2 l`disclosing the removable spool in longitudinal section.

Fig. 6 is a detailed vertical sectional view on line 6-6 of Fig. 1 showing the means whereby the roller which is held to permit of lateral adjustment to provide for cutting the belt to a desired width.

The process will be best understood after a description yhas been given of the apparatus. y i

Referring in detail to thedrawing, A indicates a table made preferably of cast iron upon which are mounted rollers A, A', A', upon which is placed a disk of leather from which thev belt is to be formed. B and B indicate two rolls, the lower one B, of which is driven from the counter-shaft C through the miter gearing C and the edge of the leather disk isheld between the said rolls and propelledthereby against the knife D which cuts it to the proper width, said width being determined by the position of the rolls D', VD- as lwill hereinafter more fully appear. Theupper roll B is held in a frame B2 which in turn is journaled on the pins B3, B3 which have their bearings in the outer frame B4 which in turn is held on one end of the lever B5 and is pressed toward the rollfby the spring B6 as will be readilyunderstood. This construction per- Y mits the leather disk to be firmly held and propelled by the roller B and is made to, conform to the variations in thickness of the leather and in case the leather is uneven or warped, to force the same into vsure contact. After the strip has been cut` by the knife D it passes between two pairs of guide rolls, E, E disposed in planes transverse to each other, to Vthe cutting knife or trimmer F consisting of a conically formed tube, the small periphery of which is sharpened to provide a circular cutting edge to round the square belt strip into circular cross-section. The top vrolls of the rolls E, E is also provided with a spring E for tensioning them against the lower rolls. The belt then passes between the grooved rollers G, G which are held closely together by spring Gr.l located in the housing G2 and is then led between the rollers H, H which are submerged in an oil bath I and thence between the rollers J, J and K, K and into the spool L on which it is wound in successive layers and may be removed at this point if desired. Ordinarily, however,lthe spool L serves to pull the belt through, the latter being wound several turns thereon and being driven through the shaft C and gearing C2 the belt is drawn through bythe spool L as it is being cut and shaped. The belt isthen carried over the spool M and between the rollers m, m to the friction wheels, N, N and polishing wheels N, N respectively. The contact surfaces of the polishing wheels are covered with raw hide or other suitable material topolish the-surface of the round belt by friction. The friction. wheels, N, N are driven at a high speed'and s erve to smooth'en and harden the surface vof the belting. These sets of friction and polishing'wheels are driven from` the shaft O through the gearing O', and thelirst set of polishing rolls is driven by means ofthe belt P and gearing` P. The'wheels N, VN are mounted on shafts N2, N2 respectively, supported in standards N3, N3 andthe polishing wheels N4, N* are held in 'a housing N. Thebelt then is passed successively between the rollers, R, R, S, the spool driven through'the miter gearing W" which is driven from the shaft O yas will be clear from the drawing. Clutch rneansV X, X are provided to connect and discon-l nect shafts C and O vrespectively from the main driving shaft Y. j

The knife D is held in a bracket D2 which bracket also supports one of the rollers E, and said roller E and knife D are therefore adjustable with the bracket and held in adjusted relation by the screws D3 passing through the slot D4 formed in the bracket.

The rollers D, D and the roller Eheld yby the bracket E areadjustable to and .from Vthe strip of leather which is to be formed and the adjusting means consist of a plurality of wedge members d which clamp the end of the Vjournal d firmly in any desired lateral adjustment.

Mounted on the table A is a bracket a which is adjustable longitudinally of the M table by reason of the slots av and held in adjusted position by bolts b, b, indicatesa drum having a continuous cam groove e formed therein. Mounted on the bracket on is an arm f one endof which is pivoted on the bracket as at g while the other end carries the guide pulleys K, K which are made to swing in the arc of a circle bythe travel of the arm f in the groove eby means of a stud z' secured to the arm f and free to slide in the slot f formed in the arm f. The drum in turn is driven from the worm gear c which by reason of its slow transmission moves the drum slowly and in turn causes the pulley le to be swungk back and forth to wind the belt on the spool L in successive S, T, T, and U, .Hand on toV other suitable fluid.

layers, if desired. Ordinarily, however, the stud z' is removed and the beltpermitted Vafter-having a few turnstaken on the spool Vto continue on to the spool M and thence to the polishing-rolls. By a longitudinal adjustment of the bracket a the arc through which the pulley K, K, swings may be varied within limits to accommodate belts of Vdifferent diameter .tofbe carried back and guide Vformed inthe castingH,2 ysecured Von the underside of the arm f and the belt can be placed vunder any required tension by means of the lever Haj and held in the adi justed position by means of the bracket 'H4 also carried byv the arm f. VAs the arm f swings backand forth the rolls H, H also swing back and forth through the bath. The.

rolls, J, J are slidably mounted on shafts eX-V tending across the bed Ato the width substantially of thelbath to permit the belt to remain in alinement when leaving the rolls H, H and passing tothe rolls K, K. jI preferably use a bath of oil but may use any Y The detailed construction of the removable spool is illustrated in Fig. 5,1in which L represents the spool and it, la., indicate flanges which carry pins k', t, to engage corresponding openings in the flanges of the spool. A bolt h2 extends through an opening h3 formed in one of said flanges and screws into the tapped socket k* of the op posite flange. So that, by removing said bolt h2 and sliding, the right hand flange h can be moved in the bearing h5 a Vdistancel corresponding to the length of twice. ythe length of the pins h', thus freeing the spool as will be readily understood. l

A brake is provided to prevent the reel drawn to the polishing rolls. In the form iio from unwinding except as the belt is Y which is held to a post s and the other end of which carries a, weight,the friction of the belt preventing the reel from unwinding except as theV belt is withdrawn therefrom.

.Y he various steps in the process will now be readily understood. As the raw material is fed in at the forward end of the machine bythe rolls A A and the feed mechanism -B, B2, B3, the knife ,D cutsoff a vstrip of Ydesired thickness re Vlated by the adjustment of theV rolls asherein above described. The piece so cut is either square orV rectangular in cross-section and isV thence drawn through the trimmer F whichgives iso it a circular or other desired cross-section. The belting then passes through the oil bath I to soften the fibers. As it is being drawn through the bath it is stretched by the downward pressure between the rolls H, H,- so that the fibers are stretched at the same time that they are being softened in the bath. The belting is further subjected to a longitudinal pulley throughout the whole oper.- ation, it being pulled through the various parts of the apparatus in succession under tension in the manner clearly hereinbefore explained. From the oil bath the belting passes between the friction rolls N, N. These are made to revolve at a high rate of speed and the heat developed by the friction helps harden the surface of the belting at the same time that it smoothens it. The belting then passes to the polishing wheels Ni Where its surface is given a fine polish. From the polishing wheels it is wound on successive layers on a removable reel. Any desired lengths of finished belting may now be cut fron the reel and the length formed into a complete continuous belt by splicing the ends thereof. This may be accomplished in any suitable manner and preferably by an apparatus constructed according to the disclosure in my co-pending application for patent Serial No. 273,647, filed January 29th, 1920.

Having thus described my invention, I claim 1. The process of making leather belting of desired cross-section consisting in cutting a strip of leather from the outer edge of a sheet of belting material, first forming said stripl to the eXtreme width desired, then shaping it to desired cross-section, drawing it through a fluid bath under tension, thereby stretching the leather and causing the same to absorb a portion of said fluid, thence compressing said strip thereby smoothening and hardening the same, and then passing it between polishing Wheels substantially as described.

'2. The process of making leather belting of desired cross-section consisting in cutting a strip of leather from the outer edge of a sheet of belting material, first forming said Strip to the extreme width desired, then shaping it to desired cross-section, drawing it through a fiuid bath under tension, thereby stretching the leather and causing the same to absorb a portion of said fluid, thence compressing said strip thereby smoothening and hardening the same, and then passing it between polishing wheels substantially as described.

3. The process of making leather belting of desired cross-section consisting in cutting a strip of leather from the outer edge of a.

sheet of belting material, forming said strip tothe extreme width desired, shaping it to desired cross-section, drawing it through a fluid bath under tension, compressing it in said fluid bath, passing it from said fluid bath between friction wheels to smoothen and harden the surface thereof by the heat developed, then passing it between polishing wheels, substantially as described.

4. The process of making leather belting of desired cross-section, consisting in cutting a strip of leather from the outer edge of a sheet of belting material inward toward the center thereof, forming said strip to the eX- treme width desired, shaping the same to desired cross-section, drawing it through a fluid bath and compressing it in said fluid bath and applying friction to said strip thereby smoothening and hardening the surface thereof by the heat developed and then polishing the strip substantially as described.

Signed at New York City, in the county of New York and State of New York, this 17th day of January, A. D. 1919.

oTTo CZARAN.

Witness FRANK M. ASHLEY. 

